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均分散球形氧化铕超细微粒的制备和表征
Preparation and Characterization of Monodispersed Spherical Eu2O3 Ultrafine Particles
【摘要】 采用尿素分解法制备了均分散球形Eu（OH）CO3·H2O超细沉淀粒子,进一步在空气中750℃下焙烧4h,得到了均分散球形氧化铕超细微粒.考察了各种反应条件的影响,获得了最佳的制备条件.用XRD,IR,TEM,TG以及比表面测定等手段对样品进行了表征.
【Abstract】 Monodispersed spherical Eu2O3 ultrafine particles were successfully prepared by calcinating the precusor precipitate Eu(OH)CO3 ·H2O particles obtained by aging a Eu(NO3)3 solution in the presence of urea. The effect of various reaction conditions such as the concentration of urea and Eu(NO3)3, and the pH on the resulting particles was investigated and the optimal preparation conditions were obtained. XRD, IR, TG, TEM and specific surface area measurement techniques were used to characterize the obtained samples.
【关键词】 氧化铕；
超细粒子；
球形均分散粒子；
尿素分解法；
【Key words】 europia； ultrafine particles； monodispersed spherical particles； urea decomposition method；
【Key words】 europia； ultrafine particles； monodispersed spherical particles； urea decomposition method；
【基金】 国家自然科学基金(29903005);九五攀登计划资助项目
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,2000年06期
- 【分类号】O614
- 【被引频次】13
- 【下载频次】242